1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
#ifndef RECT_H
#define RECT_H
#include "Vector2.h"
// A rectangle.
template <typename T>
class RectT
{
public:
typedef RectT<T> RectType;
typedef float BaseType;
T x; //< Rectangle x coordinate.
T y; //< Rectangle y coordinate.
T width; //< Rectangle width.
T height; //< Rectangle height.
inline static const char* GetTypeString();
inline static bool IsAnimationChannel() { return false; }
inline static bool MightContainPPtr() { return false; }
// Create a empty rectangle.
RectT()
{
Reset();
}
// Create a new rectangle.
RectT(T inX, T inY, T iWidth, T iHeight)
{
x = inX; width = iWidth;
y = inY; height = iHeight;
}
T GetRight() const { return x + width; }
T GetBottom() const { return y + height; }
void SetLeft(T l) { T oldXMax = GetXMax(); x = l; width = oldXMax - x; }
void SetTop(T t) { T oldYMax = GetYMax(); y = t; height = oldYMax - y; }
void SetRight(T r) { width = r - x; }
void SetBottom(T b) { height = b - y; }
T GetXMax() const { return x + width; }
T GetYMax() const { return y + height; }
// Return true if rectangle is empty.
inline bool IsEmpty() const { return width <= 0 || height <= 0; }
inline void SetPosition(const Vector2f& position) { x = position.x; y = position.y; }
inline Vector2f GetPosition() const { return Vector2f(x, y); }
inline void SetSize(const Vector2f& size) { width = size.x; height = size.y; }
inline Vector2f GetSize() const { return Vector2f(width, height); }
// Resets the rectangle
inline void Reset() { x = y = width = height = 0; }
// Sets the rectangle
inline void Set(T inX, T inY, T iWidth, T iHeight)
{
x = inX; width = iWidth;
y = inY; height = iHeight;
}
inline void Scale(T dx, T dy) { x *= dx; width *= dx; y *= dy; height *= dy; }
// Set Center position of rectangle (size stays the same)
void SetCenterPos(T cx, T cy) { x = cx - width / 2; y = cy - height / 2; }
Vector2f GetCenterPos() const { return Vector2f(x + (BaseType)width / 2, y + (BaseType)height / 2); }
// Ensure this is inside the rect r.
void Clamp(const RectType &r)
{
T x2 = x + width;
T y2 = y + height;
T rx2 = r.x + r.width;
T ry2 = r.y + r.height;
if (x < r.x) x = r.x;
if (x2 > rx2) x2 = rx2;
if (y < r.y) y = r.y;
if (y2 > ry2) y2 = ry2;
width = x2 - x;
if (width < 0) width = 0;
height = y2 - y;
if (height < 0) height = 0;
}
// Move rectangle by deltaX, deltaY.
inline void Move(T dX, T dY) { x += dX; y += dY; }
// Return the width of rectangle.
inline T Width() const { return width; }
// Return the height of rectangle.
inline T Height() const { return height; }
// Return true if a point lies within rectangle bounds.
inline bool Contains(T px, T py) const { return (px >= x) && (px < x + width) && (py >= y) && (py < y + height); }
inline bool Contains(const Vector2f& p) const { return Contains(p.x, p.y); }
// Return true if a relative point lies within rectangle bounds.
inline bool ContainsRel(T x, T y) const
{
return (x >= 0) && (x < Width()) && (y >= 0) && (y < Height());
}
inline bool Intersects(const RectType& r) const
{
// Rects are disjoint if there's at least one separating axis
bool disjoint = x + width < r.x;
disjoint |= r.x + r.width < x;
disjoint |= y + height < r.y;
disjoint |= r.y + r.height < y;
return !disjoint;
}
// Normalize a rectangle such that xmin <= xmax and ymin <= ymax.
inline void Normalize()
{
width = std::max<T>(width, 0);
height = std::max<T>(height, 0);
}
bool operator == (const RectType& r)const { return x == r.x && y == r.y && width == r.width && height == r.height; }
bool operator != (const RectType& r)const { return x != r.x || y != r.y || width != r.width || height != r.height; }
};
typedef RectT<float> Rectf;
typedef RectT<int> RectInt;
template<> inline const char* Rectf::GetTypeString() { return "Rectf"; }
template<> inline const char* RectInt::GetTypeString() { return "RectInt"; }
inline bool CompareApproximately(const Rectf& lhs, const Rectf& rhs)
{
return CompareApproximately(lhs.x, rhs.x) && CompareApproximately(lhs.y, rhs.y) &&
CompareApproximately(lhs.width, rhs.width) && CompareApproximately(lhs.height, rhs.height);
}
// Make a rect with width & height
template<typename T>
inline RectT<T> MinMaxRect(T minx, T miny, T maxx, T maxy) { return RectT<T>(minx, miny, maxx - minx, maxy - miny); }
// RectT<float> specialization
template<>
inline bool Rectf::IsEmpty() const { return width <= 0.00001F || height <= 0.00001F; }
#endif
|
